PIN setup for vs1053 / ESP32 / MD_MIDIFile - Audio - Arduino Forum
Amazon.com: DIYmall DEVIT V1 ESP32-WROOM-32 Development Board ESP32 ESP-32S 2.4GHz WiFi+BT BLE Dual-core Dev Module CP2102 for Arduino DOIT : Electronics
ESP32 Pinout simplified: No more confusion when choosing GPIOs.
HELP] Serial Communication between an ESP32-CAM and Arduino Mega2560 - Programming Questions - Arduino Forum